• 유통과학연구
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• 제22권6호
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• pp.107-114
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• 2024

Purpose: The current research investigates historical and future trends of tourist distribution channels in the tourism services business. The research examines historical patterns, current shifts, and new technologies in electricity distribution to offer insight into the distribution dynamics and advice for companies and regulators. Research design, data and methodology: The research in this case specifically employed the PRISMA approach when it comes to the data collection and research methodology. (PRISMA). The process is specifically made up of four steps, such as (1) Identification of Relevant Studies, (2) Screening and Selection Procedures, (3) Data Synthesis and Analysis, and (4) Reporting of Findings. Results: The fast-changing technology offers all opportunities to innovate the sector of tourism services. These upcoming technologies are not just reconstructing the way customers interact and operate but they are also creating room for development. Besides "the utilization of new technologies such as artificial intelligence, augmented reality, virtual reality, and blockchain, the current state of tourism distribution channels also implies some other possible consequences. Conclusions: These research results show that we should not be reluctant about adopting new technologies, we should expand direct booking systems, promote eco-friendly tourism, and use data analytics in order to provide personalized experiences.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제9권6호
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• pp.2289-2301
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• 2015

Mobile devices are becoming powerful enough to realize augmented reality (AR) application. This paper introduces two AR methods to estimate an environmental illumination distribution of a scene. In the first method, we extract the lighting direction and intensity from input images captured with a front-side camera of a mobile device, using its orientation sensor. The second method extracts shadow regions cast by three dimensional (3D) AR marker of known shape and size. Because previous methods examine per pixel shadow intensity, their performances are much affected by the number of sampling points, positions, and threshold values. By using a simple binary operation between the previously clustered shadow regions and the threshold real shadow regions, we can compute efficiently their relative area proportions according to threshold values. This area-based method can overcome point sampling problem and threshold value selection. Experiment results demonstrate that the proposed methods generate natural image with multiple smooth shadows in real-time.

• 방송공학회논문지
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• 제21권1호
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• pp.24-35
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• 2016

증강현실에서 주변 환경의 조명 분포를 추정하여 자연스러운 그림자 영상을 생성할 수 있다. 그러나 별도의 센서 장비 없이 주변 환경을 해석하는 과정에는 조명 분포의 모델, 가상 객체의 기하정보, 표면의 반사특성 등이 필요하다. 3D 마커를 이용하는 기존의 조명분포 추정 방법은 조명 공간을 지오데식 돔(geodesic dome)으로 모델링하고 마커에 의한 그림자 이미지를 분석한다. 그러나 사전에 설정 된 후보 그림자 맵을 이용하기 때문에 실제 조명의 분포를 정확하게 추정하지 못할 수 있다. 본 논문에서는 증강현실에서 주변 환경의 광원 정보를 정확하게 추정하기 위해 조명 공간을 계층적으로 분할하는 방법이 제안된다. 제안된 방법은 그래디언트 레이(gradient ray)를 이용해 분할된 그림자 영역과 후보 그림자 맵 간의 상대적 중첩 영역 비(ratio)에 따라 지오데식 돔을 계층적으로 분할한다.

• 품질경영학회지
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• 제19권1호
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• pp.95-102
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• 1991

This paper is concerned with the production-distribution problem with multiple conflicting objectives. In reality business firms should take account not only of the profit maximization but of various environmental criteria, namely customer services, in order to improve the business logistics. A production-distribution model of goal porgramming type considering the lead time and distribution cost by products is constructed, the solution algorithm is developed, which is based on the Ignizio's method. A numerical example is given to demonstrate the applicability of goal programming for production-distribution problem.

• 한국게임학회 논문지
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• 제17권4호
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• pp.7-16
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• 2017

본 논문에서는 4차 산업혁명의 트렌드에 맞춰 가상 증강현실의 객관적 발전 현황을 분석, 동향을 파악하는데 목적이 있다. 분석틀은 군터크래스의 분석틀과 교정된 LG 유럽디자인센터의 디지털 분석모듈을 사용, 범위는 디바이스, 개발, 유통 플랫폼, 콘텐츠로 나뉜다. 대상과 목적에 따라 증강현실만, 혹은 가상현실만 선호하는 특이성을 보였으며 아동 교육 분야에서 두드러졌다. 엔터테인먼트성향을 지닌 경우에는 트렌드와 활동성에 가까웠으며 정적으로 갈수록 교육, 정보, 소통의 콘텐츠가 주를 이루었다. 콘텐츠의 주요소에 따라 성향, 소통 방법, 타겟, 연령 그리고 디바이스로 구분되어짐을 알 수 있다. 본 논문은 가상 증강현실 콘텐츠의 기획 단계에서의 기초 자료로 활용되는데 의의가 있다.

• Educational Technology International
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• 제21권2호
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• pp.155-191
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• 2020

The aim of this study was to examine the trends (e.g., the distribution of the studies by year, country, research methods, and participants' education level) and fundamental findings [e.g., interaction in Virtual Reality (VR) environments, educational content through VR and Augmented Reality (AR) technologies, learning environment in AR, etc.] regarding immersive learning technologies such as VR and AR in English Language Teaching (ELT) between 2010 and 2019. Employing a systematic review research methodology, data was gathered from 59 academic articles published in the following databases: EBSCOhost, ERIC, Web of Science, and Taylor & Francis. The studies were analyzed using a content analysis approach, and findings demonstrated that immersive learning technologies in ELT came to prominence in 2017. Mixed methods research was the most widely employed research method. The most studied language skill was vocabulary for AR and speaking for VR. The results also revealed advantages and challenges with regards to the use of immersive learning technologies in ELT. Further analysis illustrated the findings related to characteristics of immersive learning technologies in ELT. Based on this review, research and design implications for researchers and practitioners are presented.

• 대한통합의학회지
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• 제4권2호
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• pp.1-11
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• 2016

Purpose : The purpose of this study was to identify whether virtual reality-based exercise could improve on balance, gait and fall efficacy in patients with Parkinson's disease. Methods : Ten patients with Parkinson's disease were randomly divided into either an experimental or control group. The experimental subjects performed vertual reality-based exercise, whereas the control subjects performed conventional physical therapy for 4 weeks. The balance, gait and fall efficacy of all subjects were assessed by using the Measurement Training and Documentation (MTD) balance system, force platform system, Korean version of Berg Balance scale (K-BBS), 6 Minute Walk Test (6MWT), and Korean version of Fall efficacy scale (K-FES) at pre training and post training. Wilcoxon signed rank test was used to analyze change before and after intervention in intra-group. Mann Whitney U test was used to analyze changes of all variables in inter-groups. Results : Subjects in the experimental group showed significant improvements in difference of weight distribution, K-BBS scores, antero-posterior and medio-lateral sway length, ground reaction force (GRF), 6MWT, and step length following training. The changes of difference of weight distribution, K-BBS scores, AP Sway Length, GRF, 6MWT, step length and K-FES scores in the experimental group were significantly more than them of the control group. Conclusion : The result of this study suggest that virtual reality-based exercise training is an intervention to improve on balance, gait, and falls efficacy in patients with Parkinson's disease.

• 유통과학연구
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• 제19권1호
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• pp.75-87
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• 2021

Purpose: The objective of this research is to identify the core aspects of persuasive factors influencing consumer's experiential value towards using Augmented Reality (AR) try-on feature while shopping cosmetic products online. The conceptual framework of this study is adopted and integrated from the theoretical study on how narrative experience, media richness, and presence affect the formation of experiential value in the augmented reality interactive technology (ARIT) process. Research design, data and methodology: The sample (n = 550) were collected from online and offline questionnaires by using stratified random sampling and purposive sampling methods. Confirmatory Factor Analysis (CFA) and Structural Equation Model (SEM) were used to analyze the data to confirm goodness-of-fit of the model and hypothesis testing. Results: The results indicated that media richness induced higher experiential value (consumer ROI, playfulness, service excellence and aesthetics), followed by narrative experience and presence towards using AR try-on feature. Conclusions: Consumer's experiential value towards using AR try-on feature when shopping cosmetic products online rely on media richness, narrative experience and presence respectively. Therefore, marketing practitioners are recommended to develop the feature design and content to be more useful, authentic, user-friendly and entertaining to better connect and provide confidence to consumers when shopping cosmetics online.

• 산경연구논집
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• 제13권11호
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• pp.21-30
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• 2022

Purpose: This study investigates the moderating effect of mindset types on experience and perceived quality in virtual reality (VR) contexts and identify the relationships among mindset types, experience, perceived quality, attitude, and purchase. Research design, data and methodology: Using a survey, a total of 250 participants were recruited from South Korea. Participants were asked whether they have been VR users who had experienced VR before participating in the survey. We used the partial least squares method to test the hypotheses based on structural equation modeling. Results: The results show that experience, including spatial, reality, and sensory experiences, has positive effects on perceived quality. Additionally, the mindset moderates the relationship between experience and perceived quality such that consumers with experience are more likely to have greater perceived quality when they have a growth mindset compared to those with a fixed mindset. The VR context's perceived quality exerts positive effects on attitude toward the VR context, while attitude has positive effects on purchase intention. Conclusion: We suggest that the consumer's mindset might work as an essential moderating factor that influences the relationship between experience and perceived quality. Our findings can help marketers plan promotion strategies more effectively and cater to the different objectives of their contexts.

• 유통과학연구
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• 제20권11호
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• pp.99-108
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• 2022

Purpose: The wide distribution of smartphones has changed life and user behavior. This phenomenon has both advantages and disadvantages for users. As smartphones become a part of our daily lives, smartphone addiction has recently become a social issue in many countries. This study explores factors that affect smartphone addiction and the consequences of addictive behaviors. Research design, data and methodology: Our model hypothesizes that four key factors determine addictive behavior: flow, enjoyment, preference for online social life, and escape reality. Commitment and compulsive use are mediating variables that connect key drivers and addictive results. Based on the SEM (structural equation model) analysis of 497 survey responses, these four driving factors each have a significant effect on the compulsive use of smartphones directly or indirectly; the compulsive use of smartphones directly influences the three results Results: We conducted a reliability and validity analysis, and the results were successful. In the hypothesis test, every path is accepted as expected at the significance level of 0.05. Conclusions: Among the four driving factors, escape reality is the vital factor influencing smartphone addiction and its consequences. And anxiety is the number one consequence influenced by the compulsive use of smartphones.